//弹出层调用。传递文件地址和标题即可
function show_iframe(url,subtitle)
{

    layui.use('layer', function(){
        var layer = layui.layer;


        layer.open({
            type: 2,
            title: subtitle,
            shadeClose: true,
            shade: 0.8,
            area: ['600px', '80%'],
            content: url //iframe的url
        });

    });
}